I THINK (read this long time ago) instead of taking the yellow and black wires off the molex connector, you take the yellow and red wires and connect then so the 5V (red) is connected the fan's ground. This will either give you 7 volts, short out your PSU, blow it up or start the apocalypse.
<b>Behold, Mine anger and My fury shall be poured out upon this place upon man and upon beast and upon the trees of the field and upon the fruit of the land and it shall burn and shall not be quenched